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https://github.com/mollyim/webrtc.git
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0d8b79eb40
This is a reland of commit 86cfe50c0e
The fix was to add a backwards compatible #include + build dep.
They will be removed once Chromium is migrated.
Original change's description:
> Extract HasIPv4Enabled/HasIPv6Enabled.
>
> Bug: b/292167110
> Change-Id: Idafa4ef23e87951bdd0276c29dee3e7f8be68476
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/312580
> Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
> Cr-Commit-Position: refs/heads/main@{#40478}
Bug: b/292167110
Change-Id: I9797f52adf15aba57e114d0a1efec0f757ead278
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/313264
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40491}
111 lines
3 KiB
C++
111 lines
3 KiB
C++
/*
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* Copyright 2023 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "rtc_base/net_test_helpers.h"
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#include <memory>
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#include <string>
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#if defined(WEBRTC_WIN)
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#include <ws2spi.h>
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#include <ws2tcpip.h>
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#include "rtc_base/win/windows_version.h"
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#endif
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#if defined(WEBRTC_POSIX) && !defined(__native_client__)
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#include <arpa/inet.h>
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#if defined(WEBRTC_ANDROID)
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#include "rtc_base/ifaddrs_android.h"
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#else
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#include <ifaddrs.h>
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#endif
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#endif // defined(WEBRTC_POSIX) && !defined(__native_client__)
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namespace rtc {
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bool HasIPv4Enabled() {
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#if defined(WEBRTC_POSIX) && !defined(__native_client__)
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bool has_ipv4 = false;
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struct ifaddrs* ifa;
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if (getifaddrs(&ifa) < 0) {
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return false;
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}
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for (struct ifaddrs* cur = ifa; cur != nullptr; cur = cur->ifa_next) {
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if (cur->ifa_addr != nullptr && cur->ifa_addr->sa_family == AF_INET) {
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has_ipv4 = true;
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break;
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}
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}
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freeifaddrs(ifa);
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return has_ipv4;
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#else
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return true;
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#endif
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}
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bool HasIPv6Enabled() {
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#if defined(WINUWP)
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// WinUWP always has IPv6 capability.
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return true;
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#elif defined(WEBRTC_WIN)
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if (rtc::rtc_win::GetVersion() >= rtc::rtc_win::Version::VERSION_VISTA) {
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return true;
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}
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if (rtc::rtc_win::GetVersion() < rtc::rtc_win::Version::VERSION_XP) {
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return false;
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}
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DWORD protbuff_size = 4096;
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std::unique_ptr<char[]> protocols;
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LPWSAPROTOCOL_INFOW protocol_infos = nullptr;
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int requested_protocols[2] = {AF_INET6, 0};
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int err = 0;
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int ret = 0;
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// Check for protocols in a do-while loop until we provide a buffer large
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// enough. (WSCEnumProtocols sets protbuff_size to its desired value).
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// It is extremely unlikely that this will loop more than once.
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do {
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protocols.reset(new char[protbuff_size]);
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protocol_infos = reinterpret_cast<LPWSAPROTOCOL_INFOW>(protocols.get());
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ret = WSCEnumProtocols(requested_protocols, protocol_infos, &protbuff_size,
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&err);
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} while (ret == SOCKET_ERROR && err == WSAENOBUFS);
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if (ret == SOCKET_ERROR) {
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return false;
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}
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// Even if ret is positive, check specifically for IPv6.
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// Non-IPv6 enabled WinXP will still return a RAW protocol.
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for (int i = 0; i < ret; ++i) {
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if (protocol_infos[i].iAddressFamily == AF_INET6) {
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return true;
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}
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}
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return false;
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#elif defined(WEBRTC_POSIX) && !defined(__native_client__)
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bool has_ipv6 = false;
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struct ifaddrs* ifa;
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if (getifaddrs(&ifa) < 0) {
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return false;
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}
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for (struct ifaddrs* cur = ifa; cur != nullptr; cur = cur->ifa_next) {
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if (cur->ifa_addr != nullptr && cur->ifa_addr->sa_family == AF_INET6) {
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has_ipv6 = true;
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break;
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}
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}
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freeifaddrs(ifa);
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return has_ipv6;
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#else
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return true;
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#endif
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}
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} // namespace rtc
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